Pontoon bumper



FIG. 1 is a perspective view of a pontoon bumper embodying the invention;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of a suction cup and hook therefor are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a pontoon bumper, as shown and described. 